. >>> classes are scheduled to resume tomorrow for the students of sandy hook elementary. the elementary school moved to a new building seven miles away in neighboring monroe, connecticut. parents and students had a chance to tour the building today. grief counselors will be on hand as the classes get underway tomorrow. interest in guns is soaring. it counted about 2.8 million background checks in december. the most ever. background checks don't necessarily add up to gun sales, but anyone who passes a background check can buy multiple firearms. interest in guns often spikes following mass shootings, such as that one in newtown, with people concerned about their safety or a potential gun ban. >>> now to our continuing coverage of the fiscal cliff. just about 30 minutes ago, president obama signed the tax deal hammered out in congress. on wall street, investors today reacted enthusiastically. the dow jones industrial average rose 308 points. more than 2%. that is the dow's biggest gain in a year. the nasdaq was also up 92. a 3% increase. so, one fiscal cliff crisis averted.